Question Text
Question 1 :
Which of the following is the correct electron distribution of chlorine atom ? (Atomic number of chlorine is 17).
Question 2 :
The atomic number of calcium and argon are 20 and 18 respectively, but the mass number of both these elements is 40. What is the name given to such a pair of elements?
Question 3 :
The number of electrons in an element X is 15 and the number of neutrons is 16. Which of the following is the correct representation of the element?
Question 4 :
Which of the following element has an atom with one electron, one proton and no neutron ?
Question 5 :
Which of the following scientist identified the 'Electrons' in the structure of an atom ?
Question 6 :
Is it possible for the atom of an element to have one electron, one proton and no neutron. (Yes/No)
Question 7 :
One electron is present in the outer most shell of the atom of an element X. What would be the value of charge on the ion formed if this electron is removed from the outermost shell ?
Question 8 :
The ion of an element has 3 positive charges. Mass number of the atom is 27 and the number of neutrons is 14. What is the number of electrons in the ion?
Question 9 :
Calculate the number of neutrons present in the nucleus of an element X which is represented as $_{15}^{31}X$.